J&J sues Amgen over plan to sell drug similar to blockbuster Stelara

Reuters

Published Nov 30, 2022 10:51AM ET

Updated Nov 30, 2022 04:55PM ET

By Brendan Pierson and Blake Brittain

(Reuters) -Johnson & Johnson's Janssen unit has sued Amgen Inc (NASDAQ:AMGN) over its plan to market a drug for ulcerative colitis and other conditions similar to J&J (NYSE:JNJ)'s top-selling Stelara, saying it would infringe two patents in a lawsuit made public on Wednesday.

Stelara accounted for $9.1 billion of J&J's $52 billion in global drug sales last year. Sales for the first nine months of this year were $7.3 billion, up 7.9% over the same period last year.

The drug is also approved to treat Crohn's disease, the skin condition psoriasis and a related form of arthritis. It is a biologic drug, meaning it is made inside living cells.

A 2009 law allows companies to make so-called biosimilar versions of biologic drugs that can be substituted for them, much like generic versions of conventional drugs. However, J&J alleges that Amgen failed to follow the legal process required by that law for the companies to litigate any patent disputes.

If Amgen launches its drug, J&J said it would infringe J&J's patent on the drug's active ingredient and on its use for treating ulcerative colitis.